The Potential Perils of Forest Carbon Contracts for Developing Countries: Cases from Africa Journal of Peasant Studies, Vol. 39, No. 2, pp. 551-572 24 Pages Posted: 24 May 2012
Acne in adult women is often hard to treat. One study showed that 80 percent of women prescribed antibiotics for acne receive no benefits from the drugs, Shinkai said. In these cases, the acne may stem from normal hormonal changes, such as those that occur around the menstrual cycle, or from a true hormonal disorder. For many of these women, medications that target hormones, rather than skin bacteria, would provide the most help, Shinkai said.
While acne is very common, cystic acne is relatively uncommon and more severe. The main factors behind cystic acne are the hormonal changes in puberty, but it can occur in older individuals, too. Cystic acne is not caused by chocolate, nuts, or greasy foods, nor by poor hygiene or masturbation.